Gas-burner.



M. KRAVITZ.

GAS BURNER.

APPLICATION FILED MAY 2. 1916.

1,212.5@ Patented Ja11.16,1917.

ernten@ MAX KRAVITZ, PHILADELPHIA, PENNSYLVANI.

eas-nonnen.

State of Pennsylvama, have invented new and useful Improvements in Gas-Burners,

of which the following is a specification.

This invention relates to gas burners, and

particularly to a gas burner Vfor stoves,

1o ranges, etc., embodying means` for producing a gas flame of full strength or of reduced strength, so that when desired the full heat of the burner may be obtained for cooking and analogous purposes requiring comparatively high heat, or a llame of low character or strength produced for simmering or other analogous purposes.

The primary object of the invention is to provide a burner equipped with independent burner sections, one of which is used when a full flame is desired and the other when a small or simmering flame is desired, together with a valve mechanism for controlling the iow of gas to both of said burner sections through the instrumentality of a single valve, whereby the supply of gas to both burners may be simultaneously cut oil or the gas allowed to flow to one or the other of the burners, but not to both simultaneously.

A further object of the invention is to provide burners having independent supply conduits in combination with a single valve for positively supplying the gas thereto and which will supply the gas to either burner with a proper and regulated proportion of air to support combustion.

With these and other objects in View, the invention consists of the features of construction, combination and arrangement of parts hereinafter fully described and claimed, reference being had to the accompanying drawing in which:

Figure l is a vertical transverse'section through a gas stove and burner equipped with the present invention. Fig. 2 is a horizontal section through the same on the line 2-2 of Fig. 1. Fig. 3 is an enlarged detail sectional view on the line 3--3 of Fig. 1. Fig. 4 is a perspective view of the valve plug. Fig. 5 is a longitudinal section thereof.

Referring to the drawing, the numeral 1 designates an ordinary form of gas stove, provided with the usual burner 2, connected with a fuel supply conduit 3 communicating with air supply inlets 4. rlhe gas main or supply pipe 5 is arranged in a suitable po- Speoieation of Letters Patent.

application med my a, 191e. seria1 no. 94,964.

Patented dan. 16, 191'?,

sition and is in communication with the conduit 3 through a controlling valve 6.

The above described construction may be that common to gas stoves of ordinary type.

The burner 2 is provided and employed as a main burner for securing a full heating llame. For the purpose of securing a smaller llame or llame of relatively lower strength, I provide an auxiliar burner 7 which is centrally positioned within the main burner 2. This auxiliary burner includes a semi-hemispherical body 8 having a series of jet nozzles or perforations 9 formed therein, which burner communicates with a fuel supplying pipe or'duct 10 having one or more air inlets 11, said pipe or duct 10 being entirely independent of the pipe or duct 3. The burner 7 is designed to be employed for producing a low degree of heat for the purpose of keeping the contents of a kitchen utensil or other receptacle in a heated condition, or in a simmering state, but not so hot as to actively affect the contents of the utensil. rlhus by the use of the main burner 2 a full strength flame may be secured for ordinary cooking or heating purposes, while by the use of the burner 7 a low degree of heat may be obtained for merely maintaining the contents of a receptacle at a determined comparatively low temperature.

The valve 6 may take the place of an ordinary controlling valve, but in the present instance is of novel construction and is designed to control the supply of gas to both burners through the respective conduits 3 and 10. rlhis valve comprises a casing' 12 having alined admission and discharge ports 13 and 14 which are in respective communication with the gas supplyy pipe 5 and with the conduit 3, and a valve proper 15 which is mounted within said casing for controlling said ports and also establishing communication between the port 13 and a port or passage 16 connecting the valve casing with the pipe 10. rlhe said port or passage 16 is formed in a union or nipple 17 connecting the lower end of the valve with the approximate end of the pipe 10, and, as shown, the valve 15, which is preferably of the tapered plug type, is provided with a diametrical passage 18 for connecting the ports 13 and 14;- and is provided also with a vertical groove or recess 19 in its side communicating with a vertical port or passage 20 terminating in a threaded socket receiving the upper end of the union or nipple 17.

These ports are so arranged in connection with each other and with the passages that when the handle 21 of the plug lvalve is turned to the intermediate position A in Fig. 3 the passage 18 will connect the ports 13 and 14 fo-r the How of gas from the main 5 to the main burner 2 commingled with air entrained through the inlets 4; while when the valve handle is turned to one of the right angular positions B the passage 18 will be moved out of alinement with the ports 13 and 14 to out off the supply of gas to the main burner, but at the same time connecting the admission port 13 with the groove 19 and port 2O for the supply of gas to the auxiliary burner 7 In the third or other right angular position C all of the ports and passages will be in a blank position or out of communica-tion with each other, thus cutting oli' the supply of gas to both burners. It will thus be understood that in position C, which is the normal position of the valve, both burners willbe cut off from connection with the fuel supply main, but that when it is desired to use the main burner 3 the valve is turned to the first-named position A so that a full supply of gas mixed with air will pass such burner for ordinary cooking or heating purposes where the use of a full hot or intense liame is desired.

When it is desired however to secure merely a low flame for simmering or other purposes, as above set forth, the supply of gas to the small burner may be secured by moving the valve to position B, in which operation the flow of gas to the main burner will be cut 0E. Hence it will be seen that but a single valve is required in the use of this invention to control the flow of gas to both burners for independently supplying each burnerl and at the same time cutting off the flow of gas to the other burner, and that by means of the same valve the flow of gas to both i burners may be cut off, thus simplifying the construction of the burner mechanism and reducing the cost of manufacture while at the same time rendering the operation simpler, more convenient and' safer than by the use of a plurality of valves, since in the adjustment of the single valve the supply of gas may be positively controlled and` the danger of leaving one`or the other of the' a plug valve mounted in said casing and provided with a diametrically extending port for connecting said inlet port with the discharge port leading to the main burner conduit, said plug having also a vertical feed port opening through one of its sides and its bottom, said port being adapted for connecting the inlet passage of the valve casing with the auxiliary burner feed conduit,said valve passages being so disposed as to adapt the valve to be moved to different feed positions to connect one or the other of said burners with the main supply pipe and to a third position to out off communication between both burners and the main supply pipe. v

In testimony whereof I affix my signature.A

MAX KRAVITZ. 

